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Mobile Intel
®
915GME Express Chipset
April 2007 Development Kit User’s Manual
Order Number: 317230-001US 45
Hardware Reference—Mobile Intel
®
915GME Express Chipset
4.6.2.3 ADD2 Slot
When not being used for PCI Express, the x16 slots can be used for Serial Digital Video
Out (SDVO), which is also sometimes referred to as ADD2 (Advanced Digital Display
2
nd
generation). SDVO cards provide for a third party vendor secondary graphics add-
on such as a digital panel interface. It is important to note that the Mobile Intel
®
915GME Express Chipset does not support lane reversal of its SDVO interface and
since the slot is routed lane reversed, a special SDVO card which un-reverses the lanes
must be used. These cards are sometimes referred to as ADD2-R (“R” for reversed)
cards.
Note: ADD2-N (“N” for normal) cards are not compatible with the board.
A70GND B70LANE 13 (T+)
A71GND B71LANE 13 (T-)
A72 LANE 13 (R+) B72 GND
A73 LANE 13 (R-) B73 GND
A74GND B74LANE 14 (T+)
A75GND B75LANE 14 (T-)
A76 LANE 14 (R+) B76 GND
A77 LANE 14 (R-) B77 GND
A78GND B78LANE 15 (T+)
A79GND B79LANE 15 (T-)
A80 LANE 15 (R+) B80 GND
A81 LANE 15 (R-) B81 PRST2#
A82 GND B82 RSVD
Table 13. PCI Express (x16) Pinout (J6C1) (Sheet 3 of 3)
Pin Description Pin Description
Table 14. ADD2 Slot (J6C1) (Sheet 1 of 3)
Pin
Number
AB
1 N/C 12 V
2 12 V 12 V
3 12 V Reserved
4GND GND
5N/C N/C
6N/C N/C
7N/C GND
8 N/C 3.3 V
93.3 V N/C
10 3.3 V N/C
11 RESET N/C
Key
12 GND Reserved
13 N/C GND